X-Git-Url: https://git.sur5r.net/?a=blobdiff_plain;f=servers%2Fslapd%2Fbackend.c;h=fa749b85e90e85bf178e783884205e1d86b639e8;hb=b09727567d047cb79c8da8545cca9c8355822185;hp=2707e2633d8798861efe5f69e5b6cc7653a46cd2;hpb=31a0c4a917152f63b4218175cca925e08e6d8830;p=openldap

diff --git a/servers/slapd/backend.c b/servers/slapd/backend.c
index 2707e2633d..fa749b85e9 100644
--- a/servers/slapd/backend.c
+++ b/servers/slapd/backend.c
@@ -1,3 +1,8 @@
+/* $OpenLDAP$ */
+/*
+ * Copyright 1998-2000 The OpenLDAP Foundation, All Rights Reserved.
+ * COPYING RESTRICTIONS APPLY, see COPYRIGHT file
+ */
 /* backend.c - routines for dealing with back-end databases */
 
 
@@ -13,11 +18,23 @@
 #include "slap.h"
 #include "lutil.h"
 
+#ifdef SLAPD_BDB
+#include "back-bdb/external.h"
+#endif
+#ifdef SLAPD_DNSSRV
+#include "back-dnssrv/external.h"
+#endif
+#ifdef SLAPD_LDAP
+#include "back-ldap/external.h"
+#endif
 #ifdef SLAPD_LDBM
 #include "back-ldbm/external.h"
 #endif
-#ifdef SLAPD_BDB2
-#include "back-bdb2/external.h"
+#ifdef SLAPD_META
+#include "back-meta/external.h"
+#endif
+#ifdef SLAPD_MONITOR
+#include "back-monitor/external.h"
 #endif
 #ifdef SLAPD_PASSWD
 #include "back-passwd/external.h"
@@ -31,25 +48,50 @@
 #ifdef SLAPD_TCL
 #include "back-tcl/external.h"
 #endif
+#ifdef SLAPD_SQL
+#include "back-sql/external.h"
+#endif
+#ifdef SLAPD_PRIVATE
+#include "private/external.h"
+#endif
 
 static BackendInfo binfo[] = {
-#ifdef SLAPD_LDBM
+#if defined(SLAPD_BDB) && !defined(SLAPD_BDB_DYNAMIC)
+	{"bdb",	bdb_initialize},
+#endif
+#if defined(SLAPD_DNSSRV) && !defined(SLAPD_DNSSRV_DYNAMIC)
+	{"dnssrv",	dnssrv_back_initialize},
+#endif
+#if defined(SLAPD_LDAP) && !defined(SLAPD_LDAP_DYNAMIC)
+	{"ldap",	ldap_back_initialize},
+#endif
+#if defined(SLAPD_LDBM) && !defined(SLAPD_LDBM_DYNAMIC)
 	{"ldbm",	ldbm_back_initialize},
 #endif
-#ifdef SLAPD_BDB2
-	{"bdb2",	bdb2_back_initialize},
+#if defined(SLAPD_META) && !defined(SLAPD_META_DYNAMIC)
+	{"meta",	meta_back_initialize},
 #endif
-#ifdef SLAPD_PASSWD
+#if defined(SLAPD_MONITOR) && !defined(SLAPD_MONITOR_DYNAMIC)
+	{"monitor",	monitor_back_initialize},
+#endif
+#if defined(SLAPD_PASSWD) && !defined(SLAPD_PASSWD_DYNAMIC)
 	{"passwd",	passwd_back_initialize},
 #endif
-#ifdef SLAPD_PERL
+#if defined(SLAPD_PERL) && !defined(SLAPD_PERL_DYNAMIC)
 	{"perl",	perl_back_initialize},
 #endif
-#ifdef SLAPD_SHELL
+#if defined(SLAPD_SHELL) && !defined(SLAPD_SHELL_DYNAMIC)
 	{"shell",	shell_back_initialize},
 #endif
-#ifdef SLAPD_TCL
+#if defined(SLAPD_TCL) && !defined(SLAPD_TCL_DYNAMIC)
 	{"tcl",		tcl_back_initialize},
+#endif
+#if defined(SLAPD_SQL) && !defined(SLAPD_SQL_DYNAMIC)
+	{"sql",		sql_back_initialize},
+#endif
+	/* for any private backend */
+#if defined(SLAPD_PRIVATE) && !defined(SLAPD_PRIVATE_DYNAMIC)
+	{"private",	private_back_initialize},
 #endif
 	{NULL}
 };
@@ -66,23 +108,32 @@ int backend_init(void)
 
 	if((nBackendInfo != 0) || (backendInfo != NULL)) {
 		/* already initialized */
+#ifdef NEW_LOGGING
+		LDAP_LOG(( "backend", LDAP_LEVEL_ERR,
+			   "backend_init:  backend already initialized\n" ));
+#else
 		Debug( LDAP_DEBUG_ANY,
 			"backend_init: already initialized.\n", 0, 0, 0 );
+#endif
 		return -1;
 	}
 
 	for( ;
-		binfo[nBackendInfo].bi_type !=  NULL;
+		binfo[nBackendInfo].bi_type != NULL;
 		nBackendInfo++ )
 	{
-		rc = binfo[nBackendInfo].bi_init(
-			&binfo[nBackendInfo] );
+		rc = binfo[nBackendInfo].bi_init( &binfo[nBackendInfo] );
 
 		if(rc != 0) {
+#ifdef NEW_LOGGING
+			LDAP_LOG(( "backend", LDAP_LEVEL_INFO,
+				   "backend_init:  initialized for type \"%s\"\n",
+				   binfo[nBackendInfo].bi_type ));
+#else
 			Debug( LDAP_DEBUG_ANY,
 				"backend_init: initialized for type \"%s\"\n",
 					binfo[nBackendInfo].bi_type, 0, 0 );
-
+#endif
 			/* destroy those we've already inited */
 			for( nBackendInfo--;
 				nBackendInfo >= 0 ;
@@ -102,62 +153,123 @@ int backend_init(void)
 		return 0;
 	}
 
-	Debug( LDAP_DEBUG_ANY,
+#ifdef SLAPD_MODULES	
+	return 0;
+#else
+
+#ifdef NEW_LOGGING
+        LDAP_LOG(( "backend", LDAP_LEVEL_ERR,
+                   "backend_init: failed\n" ));
+#else
+        Debug( LDAP_DEBUG_ANY,
 		"backend_init: failed\n",
 		0, 0, 0 );
+#endif
 
 	return rc;
+#endif /* SLAPD_MODULES */
 }
 
-int backend_startup(int n)
+int backend_add(BackendInfo *aBackendInfo)
+{
+   int rc = 0;
+
+   if ((rc = aBackendInfo->bi_init(aBackendInfo)) != 0) {
+#ifdef NEW_LOGGING
+       LDAP_LOG(( "backend", LDAP_LEVEL_ERR,
+                  "backend_add:  initialization for type \"%s\" failed\n",
+                  aBackendInfo->bi_type ));
+#else
+      Debug( LDAP_DEBUG_ANY,
+	     "backend_add: initialization for type \"%s\" failed\n",
+	     aBackendInfo->bi_type, 0, 0 );
+#endif
+      return rc;
+   }
+
+   /* now add the backend type to the Backend Info List */
+   {
+      BackendInfo *newBackendInfo = 0;
+
+      /* if backendInfo == binfo no deallocation of old backendInfo */
+      if (backendInfo == binfo) {
+	 newBackendInfo = ch_calloc(nBackendInfo + 1, sizeof(BackendInfo));
+	 AC_MEMCPY(newBackendInfo, backendInfo, sizeof(BackendInfo) * 
+		nBackendInfo);
+      } else {
+	 newBackendInfo = ch_realloc(backendInfo, sizeof(BackendInfo) * 
+				     (nBackendInfo + 1));
+      }
+      AC_MEMCPY(&newBackendInfo[nBackendInfo], aBackendInfo, 
+	     sizeof(BackendInfo));
+      backendInfo = newBackendInfo;
+      nBackendInfo++;
+
+      return 0;
+   }	    
+}
+
+int backend_startup(Backend *be)
 {
 	int i;
 	int rc = 0;
 
 	if( ! ( nBackendDB > 0 ) ) {
 		/* no databases */
+#ifdef NEW_LOGGING
+		LDAP_LOG(( "backend", LDAP_LEVEL_INFO,
+			   "backend_startup: %d databases to startup. \n",
+			   nBackendDB ));
+#else
 		Debug( LDAP_DEBUG_ANY,
 			"backend_startup: %d databases to startup.\n",
 			nBackendDB, 0, 0 );
+#endif
 		return 1;
 	}
 
-	if(n >= 0) {
+	if(be != NULL) {
 		/* startup a specific backend database */
+#ifdef NEW_LOGGING
+		LDAP_LOG(( "backend", LDAP_LEVEL_DETAIL1,
+			   "backend_startup:  starting \"%s\"\n",
+			   be->be_suffix[0] ));
+#else
 		Debug( LDAP_DEBUG_TRACE,
-			"backend_startup: starting database %d\n",
-			n, 0, 0 );
-
-		/* make sure, n does not exceed the number of backend databases */
-		if ( n >= nbackends ) {
-
-			Debug( LDAP_DEBUG_ANY,
-				"backend_startup: database number %d exceeding maximum (%d)\n",
-				n, nbackends, 0 );
-			return 1;
-		}
+			"backend_startup: starting \"%s\"\n",
+			be->be_suffix[0], 0, 0 );
+#endif
 
-		if ( backendDB[n].bd_info->bi_open ) {
-			rc = backendDB[n].bd_info->bi_open(
-				backendDB[n].bd_info );
+		if ( be->bd_info->bi_open ) {
+			rc = be->bd_info->bi_open( be->bd_info );
 		}
 
 		if(rc != 0) {
+#ifdef NEW_LOGGING
+			LDAP_LOG(( "backend", LDAP_LEVEL_CRIT,
+				   "backend_startup: bi_open failed!\n" ));
+#else
 			Debug( LDAP_DEBUG_ANY,
 				"backend_startup: bi_open failed!\n",
 				0, 0, 0 );
+#endif
+
 			return rc;
 		}
 
-		if ( backendDB[n].bd_info->bi_db_open ) {
-			rc = backendDB[n].bd_info->bi_db_open(
-				&backendDB[n] );
+		if ( be->bd_info->bi_db_open ) {
+			rc = be->bd_info->bi_db_open( be );
 		}
 
 		if(rc != 0) {
+#ifdef NEW_LOGGING
+			LDAP_LOG(( "backend", LDAP_LEVEL_CRIT,
+				   "backend_startup: bi_db_open failed!\n" ));
+#else
 			Debug( LDAP_DEBUG_ANY,
 				"backend_startup: bi_db_open failed!\n",
 				0, 0, 0 );
+#endif
 			return rc;
 		}
 
@@ -177,24 +289,37 @@ int backend_startup(int n)
 		}
 
 		if(rc != 0) {
+#ifdef NEW_LOGGING
+			LDAP_LOG(( "backend", LDAP_LEVEL_CRIT,
+				   "backend_startup: bi_open %d failed!\n", i ));
+#else
 			Debug( LDAP_DEBUG_ANY,
 				"backend_startup: bi_open %d failed!\n",
 				i, 0, 0 );
+#endif
 			return rc;
 		}
 	}
 
 	/* open each backend database */
 	for( i = 0; i < nBackendDB; i++ ) {
+		/* append global access controls */
+		acl_append( &backendDB[i].be_acl, global_acl );
+
 		if ( backendDB[i].bd_info->bi_db_open ) {
 			rc = backendDB[i].bd_info->bi_db_open(
 				&backendDB[i] );
 		}
 
 		if(rc != 0) {
+#ifdef NEW_LOGGING
+			LDAP_LOG(( "backend", LDAP_LEVEL_CRIT,
+				   "backend_startup: bi_db_open %d failed!\n", i ));
+#else
 			Debug( LDAP_DEBUG_ANY,
 				"backend_startup: bi_db_open %d failed!\n",
 				i, 0, 0 );
+#endif
 			return rc;
 		}
 	}
@@ -202,36 +327,37 @@ int backend_startup(int n)
 	return rc;
 }
 
-int backend_shutdown(int n)
+int backend_num( Backend *be )
 {
 	int i;
-	int rc = 0;
 
-	if(n >= 0) {
-		/* shutdown a specific backend database */
+	if( be == NULL ) return -1;
 
-		/* make sure, n does not exceed the number of backend databases */
-		if ( n >= nbackends ) {
+	for( i = 0; i < nBackendDB; i++ ) {
+		if( be == &backendDB[i] ) return i;
+	}
+	return -1;
+}
 
-			Debug( LDAP_DEBUG_ANY,
-				"backend_startup: database number %d exceeding maximum (%d)\n",
-				n, nbackends, 0 );
-			return 1;
-		}
+int backend_shutdown( Backend *be )
+{
+	int i;
+	int rc = 0;
+
+	if( be != NULL ) {
+		/* shutdown a specific backend database */
 
-		if ( backendDB[n].bd_info->bi_nDB == 0 ) {
+		if ( be->bd_info->bi_nDB == 0 ) {
 			/* no database of this type, we never opened it */
 			return 0;
 		}
 
-		if ( backendDB[n].bd_info->bi_db_close ) {
-			backendDB[n].bd_info->bi_db_close(
-				&backendDB[n] );
+		if ( be->bd_info->bi_db_close ) {
+			be->bd_info->bi_db_close( be );
 		}
 
-		if( backendDB[n].bd_info->bi_close ) {
-			backendDB[n].bd_info->bi_close(
-				backendDB[n].bd_info );
+		if( be->bd_info->bi_close ) {
+			be->bd_info->bi_close( be->bd_info );
 		}
 
 		return 0;
@@ -239,17 +365,21 @@ int backend_shutdown(int n)
 
 	/* close each backend database */
 	for( i = 0; i < nBackendDB; i++ ) {
-		BackendInfo  *bi;
-
 		if ( backendDB[i].bd_info->bi_db_close ) {
 			backendDB[i].bd_info->bi_db_close(
 				&backendDB[i] );
 		}
 
 		if(rc != 0) {
+#ifdef NEW_LOGGING
+			LDAP_LOG(( "backend", LDAP_LEVEL_NOTICE,
+				   "backend_shutdown: bi_close %s failed!\n",
+				   backendDB[i].be_type ));
+#else
 			Debug( LDAP_DEBUG_ANY,
 				"backend_close: bi_close %s failed!\n",
-				bi->bi_type, 0, 0 );
+				backendDB[i].be_type, 0, 0 );
+#endif
 		}
 	}
 
@@ -289,10 +419,19 @@ int backend_destroy(void)
 		}
 	}
 
+#ifdef SLAPD_MODULES
+	if (backendInfo != binfo) {
+	   free(backendInfo);
+	}
+#endif /* SLAPD_MODULES */
+
+	nBackendInfo = 0;
+	backendInfo = NULL;
+
 	return 0;
 }
 
-BackendInfo* backend_info(char *type)
+BackendInfo* backend_info(const char *type)
 {
 	int i;
 
@@ -309,7 +448,7 @@ BackendInfo* backend_info(char *type)
 
 BackendDB *
 backend_db_init(
-    char	*type
+    const char	*type
 )
 {
 	Backend	*be;
@@ -332,6 +471,13 @@ backend_db_init(
 	be->bd_info = bi;
 	be->be_sizelimit = defsize;
 	be->be_timelimit = deftime;
+	be->be_dfltaccess = global_default_access;
+
+	be->be_restrictops = global_restrictops;
+	be->be_requires = global_requires;
+
+ 	/* assign a default depth limit for alias deref */
+	be->be_max_deref_depth = SLAPD_DEFAULT_MAXDEREFDEPTH; 
 
 	if(bi->bi_db_init) {
 		rc = bi->bi_db_init( be );
@@ -360,9 +506,12 @@ be_db_close( void )
 }
 
 Backend *
-select_backend( char * dn )
+select_backend(
+	const char * dn,
+	int manageDSAit )
 {
 	int	i, j, len, dnlen;
+	Backend *be = NULL;
 
 	dnlen = strlen( dn );
 	for ( i = 0; i < nbackends; i++ ) {
@@ -372,57 +521,39 @@ select_backend( char * dn )
 			len = strlen( backends[i].be_nsuffix[j] );
 
 			if ( len > dnlen ) {
+				/* suffix is longer than DN */
 				continue;
 			}
 
-			if ( strcmp( backends[i].be_nsuffix[j],
-			    dn + (dnlen - len) ) == 0 ) {
-				return( &backends[i] );
+			
+			if ( len && len < dnlen && !DN_SEPARATOR( dn[(dnlen-len)-1] ) ) {
+				/* make sure we have a separator */
+				continue;
 			}
-		}
-	}
+		        
 
-        /* if no proper suffix could be found then check for aliases */
-        for ( i = 0; i < nbackends; i++ ) {
-                for ( j = 0; 
-		      backends[i].be_suffixAlias != NULL && 
-                      backends[i].be_suffixAlias[j] != NULL; 
-		      j += 2 )
-                {
-                        len = strlen( backends[i].be_suffixAlias[j] );
-
-                        if ( len > dnlen ) {
-                                continue;
-                        }
-
-                        if ( strcmp( backends[i].be_suffixAlias[j],
-                            dn + (dnlen - len) ) == 0 ) {
-                                return( &backends[i] );
-                        }
-                }
-        }
-
-#ifdef LDAP_ALLOW_NULL_SEARCH_BASE
-	/* Add greg@greg.rim.or.jp
-	 * It's quick hack for cheap client
-	 * Some browser offer a NULL base at ldap_search
-	 *
-	 * Should only be used as a last resort. -Kdz
-	 */
-	if(dnlen == 0) {
-		Debug( LDAP_DEBUG_TRACE,
-			"select_backend: use default backend\n", 0, 0, 0 );
-		return( &backends[0] );
+			if ( strcmp( backends[i].be_nsuffix[j], &dn[dnlen-len] ) == 0 ) {
+				if( be == NULL ) {
+					be = &backends[i];
+
+					if( manageDSAit && len == dnlen ) {
+						continue;
+					}
+				} else {
+					be = &backends[i];
+				}
+				return be;
+			}
+		}
 	}
-#endif /* LDAP_ALLOW_NULL_SEARCH_BASE */
 
-	return( NULL );
+	return be;
 }
 
 int
 be_issuffix(
     Backend	*be,
-    char	*suffix
+    const char	*suffix
 )
 {
 	int	i;
@@ -437,11 +568,15 @@ be_issuffix(
 }
 
 int
-be_isroot( Backend *be, char *ndn )
+be_isroot( Backend *be, const char *ndn )
 {
 	int rc;
 
-	if ( ndn == NULL || be->be_root_ndn == NULL ) {
+	if ( ndn == NULL || *ndn == '\0' ) {
+		return( 0 );
+	}
+
+	if ( be->be_root_ndn == NULL || *be->be_root_ndn == '\0' ) {
 		return( 0 );
 	}
 
@@ -461,33 +596,51 @@ be_root_dn( Backend *be )
 }
 
 int
-be_isroot_pw( Backend *be, char *ndn, struct berval *cred )
+be_isroot_pw( Backend *be,
+	Connection *conn,
+	const char *ndn,
+	struct berval *cred )
 {
 	int result;
 
 	if ( ! be_isroot( be, ndn ) ) {
-		return( 0 );
+		return 0;
 	}
 
-#ifdef SLAPD_CRYPT
-	ldap_pvt_thread_mutex_lock( &crypt_mutex );
+	if( be->be_root_pw.bv_len == 0 ) {
+		return 0;
+	}
+
+#if defined( SLAPD_CRYPT ) || defined( SLAPD_SPASSWD )
+	ldap_pvt_thread_mutex_lock( &passwd_mutex );
+#ifdef SLAPD_SPASSWD
+	lutil_passwd_sasl_conn = conn->c_sasl_context;
+#endif
 #endif
 
-	result = lutil_passwd( cred->bv_val, be->be_root_pw );
+	result = lutil_passwd( &be->be_root_pw, cred, NULL );
 
-#ifdef SLAPD_CRYPT
-	ldap_pvt_thread_mutex_unlock( &crypt_mutex );
+#if defined( SLAPD_CRYPT ) || defined( SLAPD_SPASSWD )
+#ifdef SLAPD_SPASSWD
+	lutil_passwd_sasl_conn = NULL;
+#endif
+	ldap_pvt_thread_mutex_unlock( &passwd_mutex );
 #endif
 
 	return result == 0;
 }
 
 int
-be_entry_release_rw( Backend *be, Entry *e, int rw )
+be_entry_release_rw(
+	BackendDB *be,
+	Connection *conn,
+	Operation *op,
+	Entry *e,
+	int rw )
 {
 	if ( be->be_release ) {
 		/* free and release entry from backend */
-		return be->be_release( be, e, rw );
+		return be->be_release( be, conn, op, e, rw );
 	} else {
 		/* free entry */
 		entry_free( e );
@@ -512,21 +665,362 @@ backend_unbind(
 	return 0;
 }
 
-#ifdef SLAPD_ACLGROUPS
+int
+backend_connection_init(
+	Connection   *conn
+)
+{
+	int	i;
+
+	for ( i = 0; i < nbackends; i++ ) {
+		if ( backends[i].be_connection_init ) {
+			(*backends[i].be_connection_init)( &backends[i], conn);
+		}
+	}
+
+	return 0;
+}
+
+int
+backend_connection_destroy(
+	Connection   *conn
+)
+{
+	int	i;
+
+	for ( i = 0; i < nbackends; i++ ) {
+		if ( backends[i].be_connection_destroy ) {
+			(*backends[i].be_connection_destroy)( &backends[i], conn);
+		}
+	}
+
+	return 0;
+}
+
+static int
+backend_check_controls(
+	Backend *be,
+	Connection *conn,
+	Operation *op,
+	const char **text )
+{
+	LDAPControl **ctrls;
+	ctrls = op->o_ctrls;
+	if( ctrls == NULL ) {
+		return LDAP_SUCCESS;
+	}
+
+	for( ; *ctrls != NULL ; ctrls++ ) {
+		if( (*ctrls)->ldctl_iscritical &&
+			!charray_inlist( be->be_controls, (*ctrls)->ldctl_oid ) )
+		{
+			*text = "control unavailable in NamingContext";
+			return LDAP_UNAVAILABLE_CRITICAL_EXTENSION;
+		}
+	}
+
+	return LDAP_SUCCESS;
+}
+
+int
+backend_check_restrictions(
+	Backend *be,
+	Connection *conn,
+	Operation *op,
+	const void *opdata,
+	const char **text )
+{
+	int rc;
+	slap_mask_t restrictops;
+	slap_mask_t requires;
+	slap_mask_t opflag;
+	slap_ssf_set_t *ssf;
+	int updateop = 0;
+
+	if( be ) {
+		rc = backend_check_controls( be, conn, op, text );
+
+		if( rc != LDAP_SUCCESS ) {
+			return rc;
+		}
+
+		restrictops = be->be_restrictops;
+		requires = be->be_requires;
+		ssf = &be->be_ssf_set;
+
+	} else {
+		restrictops = global_restrictops;
+		requires = global_requires;
+		ssf = &global_ssf_set;
+	}
+
+	switch( op->o_tag ) {
+	case LDAP_REQ_ADD:
+		opflag = SLAP_RESTRICT_OP_ADD;
+		updateop++;
+		break;
+	case LDAP_REQ_BIND:
+		opflag = SLAP_RESTRICT_OP_BIND;
+		break;
+	case LDAP_REQ_COMPARE:
+		opflag = SLAP_RESTRICT_OP_COMPARE;
+		break;
+	case LDAP_REQ_DELETE:
+		updateop++;
+		opflag = SLAP_RESTRICT_OP_DELETE;
+		break;
+	case LDAP_REQ_EXTENDED:
+		opflag = SLAP_RESTRICT_OP_EXTENDED;
+		break;
+	case LDAP_REQ_MODIFY:
+		updateop++;
+		opflag = SLAP_RESTRICT_OP_MODIFY;
+		break;
+	case LDAP_REQ_RENAME:
+		updateop++;
+		opflag = SLAP_RESTRICT_OP_RENAME;
+		break;
+	case LDAP_REQ_SEARCH:
+		opflag = SLAP_RESTRICT_OP_SEARCH;
+		break;
+	case LDAP_REQ_UNBIND:
+		opflag = 0;
+		break;
+	default:
+		*text = "restrict operations internal error";
+		return LDAP_OTHER;
+	}
+
+	if ( op->o_tag != LDAP_REQ_EXTENDED
+		|| strcmp( (const char *) opdata, LDAP_EXOP_START_TLS ) )
+	{
+		/* these checks don't apply to StartTLS */
+
+		if( op->o_tag == LDAP_REQ_EXTENDED ) {
+			/* threat other extended operations as update ops */
+			updateop++;
+		}
+
+		if( op->o_transport_ssf < ssf->sss_transport ) {
+			*text = "transport confidentiality required";
+			return LDAP_CONFIDENTIALITY_REQUIRED;
+		}
+
+		if( op->o_tls_ssf < ssf->sss_tls ) {
+			*text = "TLS confidentiality required";
+			return LDAP_CONFIDENTIALITY_REQUIRED;
+		}
+
+		if( op->o_tag != LDAP_REQ_BIND || opdata == NULL ) {
+			/* these checks don't apply to SASL bind */
+
+			if( op->o_sasl_ssf < ssf->sss_sasl ) {
+				*text = "SASL confidentiality required";
+				return LDAP_CONFIDENTIALITY_REQUIRED;
+			}
+
+			if( op->o_ssf < ssf->sss_ssf ) {
+				*text = "confidentiality required";
+				return LDAP_CONFIDENTIALITY_REQUIRED;
+			}
+		}
+
+		if( updateop ) {
+			if( op->o_transport_ssf < ssf->sss_update_transport ) {
+				*text = "transport update confidentiality required";
+				return LDAP_CONFIDENTIALITY_REQUIRED;
+			}
+
+			if( op->o_tls_ssf < ssf->sss_update_tls ) {
+				*text = "TLS update confidentiality required";
+				return LDAP_CONFIDENTIALITY_REQUIRED;
+			}
+
+			if( op->o_sasl_ssf < ssf->sss_update_sasl ) {
+				*text = "SASL update confidentiality required";
+				return LDAP_CONFIDENTIALITY_REQUIRED;
+			}
+
+			if( op->o_ssf < ssf->sss_update_ssf ) {
+				*text = "update confidentiality required";
+				return LDAP_CONFIDENTIALITY_REQUIRED;
+			}
+
+			if( op->o_ndn == NULL ) {
+				*text = "modifications require authentication";
+				return LDAP_OPERATIONS_ERROR;
+			}
+		}
+	}
+
+	if ( op->o_tag != LDAP_REQ_BIND && ( op->o_tag != LDAP_REQ_EXTENDED ||
+		strcmp( (const char *) opdata, LDAP_EXOP_START_TLS ) ) )
+	{
+		/* these checks don't apply to Bind or StartTLS */
+
+		if( requires & SLAP_REQUIRE_STRONG ) {
+			/* should check mechanism */
+			if( op->o_authmech == NULL ||
+				op->o_dn == NULL || *op->o_dn == '\0' )
+			{
+				*text = "strong authentication required";
+				return LDAP_STRONG_AUTH_REQUIRED;
+			}
+		}
+
+		if( requires & SLAP_REQUIRE_SASL ) {
+			if( op->o_authmech == NULL ||
+				op->o_dn == NULL || *op->o_dn == '\0' )
+			{
+				*text = "SASL authentication required";
+				return LDAP_STRONG_AUTH_REQUIRED;
+			}
+		}
+			
+		if( requires & SLAP_REQUIRE_AUTHC ) {
+			if( op->o_dn == NULL || *op->o_dn == '\0' ) {
+				*text = "authentication required";
+				return LDAP_UNWILLING_TO_PERFORM;
+			}
+		}
+
+		if( requires & SLAP_REQUIRE_BIND ) {
+			int version;
+			ldap_pvt_thread_mutex_lock( &conn->c_mutex );
+			version = conn->c_protocol;
+			ldap_pvt_thread_mutex_unlock( &conn->c_mutex );
+
+			if( !version ) {
+				/* no bind has occurred */
+				*text = "BIND required";
+				return LDAP_OPERATIONS_ERROR;
+			}
+		}
+
+		if( requires & SLAP_REQUIRE_LDAP_V3 ) {
+			if( op->o_protocol < LDAP_VERSION3 ) {
+				/* no bind has occurred */
+				*text = "operation restricted to LDAPv3 clients";
+				return LDAP_OPERATIONS_ERROR;
+			}
+		}
+	}
+
+	if( restrictops & opflag ) {
+		if( restrictops == SLAP_RESTRICT_OP_READS ) {
+			*text = "read operations restricted";
+		} else {
+			*text = "operation restricted";
+		}
+		return LDAP_UNWILLING_TO_PERFORM;
+ 	}
+
+	return LDAP_SUCCESS;
+}
+
+int backend_check_referrals(
+	Backend *be,
+	Connection *conn,
+	Operation *op,
+	const char *dn,
+	const char *ndn )
+{
+	int rc = LDAP_SUCCESS;
+
+	if( be->be_chk_referrals ) {
+		const char *text;
+
+		rc = be->be_chk_referrals( be,
+			conn, op, dn, ndn, &text );
+
+		if( rc != LDAP_SUCCESS && rc != LDAP_REFERRAL ) {
+			send_ldap_result( conn, op, rc,
+				NULL, text, NULL, NULL );
+		}
+	}
+
+	return rc;
+}
+
 int 
 backend_group(
 	Backend	*be,
+	Connection *conn,
+	Operation *op,
 	Entry	*target,
-	char	*gr_ndn,
-	char	*op_ndn,
-	char	*objectclassValue,
-	char	*groupattrName
+	const char	*gr_ndn,
+	const char	*op_ndn,
+	ObjectClass *group_oc,
+	AttributeDescription *group_at
 )
 {
-	if (be->be_group)
-		return( be->be_group(be, target, gr_ndn, op_ndn,
-			objectclassValue, groupattrName) );
-	else
-		return(1);
+	if( strcmp( target->e_ndn, gr_ndn ) != 0 ) {
+		/* we won't attempt to send it to a different backend */
+		
+		be = select_backend(gr_ndn, 0);
+
+		if (be == NULL) {
+			return LDAP_NO_SUCH_OBJECT;
+		}
+	} 
+
+	if( be->be_group ) {
+		return be->be_group( be, conn, op,
+			target, gr_ndn, op_ndn,
+			group_oc, group_at );
+	}
+
+	return LDAP_UNWILLING_TO_PERFORM;
 }
+
+int 
+backend_attribute(
+	Backend	*be,
+	Connection *conn,
+	Operation *op,
+	Entry	*target,
+	const char	*e_ndn,
+	AttributeDescription *entry_at,
+	struct berval ***vals
+)
+{
+	if( target == NULL || strcmp( target->e_ndn, e_ndn ) != 0 ) {
+		/* we won't attempt to send it to a different backend */
+		
+		be = select_backend(e_ndn, 0);
+
+		if (be == NULL) {
+			return LDAP_NO_SUCH_OBJECT;
+		}
+	} 
+
+	if( be->be_attribute ) {
+		return be->be_attribute( be, conn, op, target, e_ndn,
+			entry_at, vals );
+	}
+
+	return LDAP_UNWILLING_TO_PERFORM;
+}
+
+Attribute *backend_operational(
+	Backend *be,
+	Connection *conn,
+	Operation *op,
+	Entry *e )
+{
+	Attribute *a = NULL;
+
+#ifdef SLAPD_SCHEMA_DN
+	a = ch_malloc( sizeof( Attribute ) );
+	a->a_desc = ad_dup( slap_schema.si_ad_subschemaSubentry );
+
+	/* Should be backend specific */
+	a->a_vals = ch_malloc( 2 * sizeof( struct berval * ) );
+	a->a_vals[0] = ber_bvstrdup( SLAPD_SCHEMA_DN );
+	a->a_vals[1] = NULL;
+
+	a->a_next = NULL;
 #endif
+
+	return a;
+}